25323134442 has 16 divisors (see below), whose sum is σ = 50652492960. Its totient is φ = 8440007472.

The previous prime is 25323134407. The next prime is 25323134483. The reversal of 25323134442 is 24443132352.

It is a super-2 number, since 2×25323134442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205588 + ... + 304815.

It is an arithmetic number, because the mean of its divisors is an integer number (3165780810).

Almost surely, 2^25323134442 is an apocalyptic number.

25323134442 is an abundant number, since it is smaller than the sum of its proper divisors (25329358518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25323134442 is a wasteful number, since it uses less digits than its factorization.

25323134442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518677.

The product of its digits is 69120, while the sum is 33.

Adding to 25323134442 its reverse (24443132352), we get a palindrome (49766266794).

The spelling of 25323134442 in words is "twenty-five billion, three hundred twenty-three million, one hundred thirty-four thousand, four hundred forty-two".